Analysis of interatomic Contacts of Structural Units in PDB entry:
2X1C


Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
For CSU analysis of other PDB entry

This page provides analyses of contacts formed by:
For analysis of ligand-protein contacts, use: 3D structure can be seen in additional window with STING software for 2X1C entry

There are 4 chains in PDB entry 2X1C (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MET 1ALA 355
B
 MET 1ARG 356
C
 MET 1ALA 355
D
 MET 1ALA 355
Residue contacts

1. List of contacts for up to 10 consecutive residues:
Chain ID from residue number to residue number


2. Detailed analyses of contacts for any single residue:
Residue number chain ID
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There are 52 helices in PDB entry 2X1C. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
9 21Right-handed alpha
Helix 2
2
A
21 38Right-handed alpha
Helix 3
3
A
43 62Right-handed alpha
Helix 4
4
A
62 77Right-handed alpha
Helix 5
5
A
79 88Right-handed alpha
Helix 6
6
A
88 93Right-handed alpha
Helix 7
7
A
96 100Right-handed 310
Helix 8
8
A
123 128Right-handed 310
Helix 9
9
A
180 190Right-handed alpha
Helix 10
10
A
193 203Right-handed alpha
Helix 11
11
A
263 278Right-handed alpha
Helix 12
12
A
282 290Right-handed alpha
Helix 13
13
A
345 354Right-handed alpha
Helix 14
14
B
9 21Right-handed alpha
Helix 15
15
B
21 40Right-handed alpha
Helix 16
16
B
43 62Right-handed alpha
Helix 17
17
B
62 77Right-handed alpha
Helix 18
18
B
79 88Right-handed alpha
Helix 19
19
B
88 93Right-handed alpha
Helix 20
20
B
96 100Right-handed 310
Helix 21
21
B
123 128Right-handed 310
Helix 22
22
B
180 190Right-handed alpha
Helix 23
23
B
193 203Right-handed alpha
Helix 24
24
B
263 279Right-handed alpha
Helix 25
25
B
282 290Right-handed alpha
Helix 26
26
B
345 354Right-handed alpha
Helix 27
27
C
9 21Right-handed alpha
Helix 28
28
C
21 40Right-handed alpha
Helix 29
29
C
43 62Right-handed alpha
Helix 30
30
C
62 77Right-handed alpha
Helix 31
31
C
79 88Right-handed alpha
Helix 32
32
C
88 93Right-handed alpha
Helix 33
33
C
96 100Right-handed 310
Helix 34
34
C
123 128Right-handed 310
Helix 35
35
C
180 190Right-handed alpha
Helix 36
36
C
193 203Right-handed alpha
Helix 37
37
C
263 279Right-handed alpha
Helix 38
38
C
282 290Right-handed alpha
Helix 39
39
C
345 354Right-handed alpha
Helix 40
40
D
9 21Right-handed alpha
Helix 41
41
D
21 38Right-handed alpha
Helix 42
42
D
43 62Right-handed alpha
Helix 43
43
D
62 77Right-handed alpha
Helix 44
44
D
79 88Right-handed alpha
Helix 45
45
D
88 93Right-handed alpha
Helix 46
46
D
96 100Right-handed 310
Helix 47
47
D
123 128Right-handed 310
Helix 48
48
D
180 190Right-handed alpha
Helix 49
49
D
193 203Right-handed alpha
Helix 50
50
D
263 278Right-handed alpha
Helix 51
51
D
282 290Right-handed alpha
Helix 52
52
D
345 353Right-handed alpha
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There are 8 sheets in PDB entry 2X1C. Click on sheet of interest to get list of strands forming it: AA, AB, BA, BB, CA, CB, A, DB,

There are 8 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
3 7first strand
Strand 2
A
130 136parallel
Strand 3
A
143 148anti-parallel
Strand 4
A
155 158anti-parallel
Strand 5
A
163 168anti-parallel
Strand 6
A
211 216anti-parallel
Strand 7
A
221 227anti-parallel
Strand 8
A
230 234anti-parallel
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There are 6 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
241 244first strand
Strand 2
A
102 108anti-parallel
Strand 3
A
115 122anti-parallel
Strand 4
A
312 320anti-parallel
Strand 5
A
325 330anti-parallel
Strand 6
A
338 343anti-parallel
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There are 8 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
3 7first strand
Strand 2
B
130 136parallel
Strand 3
B
143 148anti-parallel
Strand 4
B
155 158anti-parallel
Strand 5
B
163 168anti-parallel
Strand 6
B
211 216anti-parallel
Strand 7
B
221 227anti-parallel
Strand 8
B
230 234anti-parallel
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There are 6 strands in BB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
241 244first strand
Strand 2
B
102 108anti-parallel
Strand 3
B
115 122anti-parallel
Strand 4
B
312 320anti-parallel
Strand 5
B
325 330anti-parallel
Strand 6
B
338 343anti-parallel
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There are 8 strands in CA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
3 7first strand
Strand 2
C
130 136parallel
Strand 3
C
143 148anti-parallel
Strand 4
C
155 158anti-parallel
Strand 5
C
163 168anti-parallel
Strand 6
C
211 216anti-parallel
Strand 7
C
221 227anti-parallel
Strand 8
C
230 234anti-parallel
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There are 6 strands in CB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
241 244first strand
Strand 2
C
102 108anti-parallel
Strand 3
C
115 122anti-parallel
Strand 4
C
312 320anti-parallel
Strand 5
C
325 330anti-parallel
Strand 6
C
338 342anti-parallel
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There are 8 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
3 7first strand
Strand 2
D
130 136parallel
Strand 3
D
143 148anti-parallel
Strand 4
D
155 158anti-parallel
Strand 5
D
163 168anti-parallel
Strand 6
D
211 216anti-parallel
Strand 7
D
221 227anti-parallel
Strand 8
D
230 234anti-parallel
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There are 6 strands in DB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
241 244first strand
Strand 2
D
102 108anti-parallel
Strand 3
D
115 122anti-parallel
Strand 4
D
312 320anti-parallel
Strand 5
D
325 330anti-parallel
Strand 6
D
338 342anti-parallel
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